Ответы на вопрос:
s + o2 = so2 so2 + 2naoh = na2so3 + h2o na2so3 + 2hcl = 2nacl + h2o + so2 2) 4p + 5o2 = 2p2o5 p2o5 + 6naoh = 2na3po4 +3h2o3) с + o2→ co2 co2 + ca(oh)2= caco3 + h2o caco3 + 2hcl = cacl2 + h2o + co2↑ 4) si + o2 = sio2 sio2 + 2 naoh = na2sio3 + h2o 5) 2cu + o2 = cuo cuo + h2so4 = cuso4 + h2o cuso4 + fe = cu + feso46) сuso4+zn=znso4+cu 2cu+o2=2cuo cuo+2hcl=cucl2+h2o cucl2+2naoh=2nacl+cu(oh)2
1)ch3-ch3+cl2 =hv= ch3-ch2cl+hcl 2)c3-ch2cl+koh = kcl+ch3-ch2oh 3) ch≡ch+h2 =pt, хин.= ch2=ch2 4) ch2=ch2+h2 =pt= ch3-ch3
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